# has_ticket = int(input("请输入是否有票(0/非0)"))
# if has_ticket :
#     knife_length = int(input("请输入刀的长度"))
#     if knife_length >= 20:
#         print("不允许上车")
#     else:
#         print("安检通过，允许上车")
# else:
#     print("不允许进门")
#

# 随机数
import random
num = random.randint(10,20)
print(num)